Dry-wet separation cooling tower

Abstract

The invention discloses a dry-wet separation cooling tower which comprises a tower body, a left cavity and a right cavity, the left cavity and the right cavity are divided by a partition plate, heat exchangers are installed in the left cavity and the right cavity respectively, and each heat exchanger comprises an outer frame and a heat exchange pipe set installed on the inner side of the outer frame. The heat exchange pipe set is formed by stacking a plurality of bent corrugated pipes which are integrally formed. The heat dissipation fin structure of the heat exchanger is optimally designed, the heat exchange area can be increased, the heat exchange efficiency can be improved, meanwhile, the distribution state of the corrugated pipes on the upper portion and the lower portion of the heat exchanger is changed, straight pipes of every two adjacent corrugated pipes are arranged in an inclined mode and form a trapezoidal structure, and therefore a height difference exists in the whole cooling corrugated pipe; therefore, liquid in the corrugated pipe can naturally flow out under the action of gravity, adverse effects caused by the fact that water cannot be completely drained are avoided, breakage caused by freezing of residual liquid in the corrugated pipe is prevented, and the corrugated pipe can better adapt to different environments.

Description

Technical Field

[0001] The invention belongs to the technical field of cooling towers, and in particular relates to a dry-wet separation cooling tower. Background Art

[0002] A cooling tower is a device that uses water as a circulating coolant to absorb heat from a system and discharge it into the atmosphere to lower the water temperature. It uses water and air flow to exchange heat to produce steam, and the steam evaporates and takes away the heat to achieve evaporative heat dissipation, convection heat transfer, and radiation heat transfer. It is an evaporative heat dissipation device that dissipates waste heat generated in industry or refrigeration and air conditioning to lower the water temperature to ensure the normal operation of the system. The device is generally barrel-shaped, hence the name cooling tower. In order to achieve further energy and water conservation, there are also cooling towers that use dry and wet separation, and use variable frequency dual fans and water pumps. According to the specific changes in the outdoor environment, the number of fans can be turned on and the speed of the fans and water pumps can be adjusted, thereby changing the air volume and spray water volume in real time to achieve maximum energy and water conservation.

[0003] The existing dry-wet separation cooling tower heat exchange coils are all designed with a bare tube structure parallel to the horizontal plane, which has a poor heat dissipation effect. In addition, when the cooling tower is shut down, in the northern winter, the outdoor temperature is extremely low. When the temperature is below 0°C, the internal liquid needs to be drained to achieve an anti-freeze effect. Since the flat tube cannot drain the internal liquid, as long as there is a section of the single tube of the heat exchange coil filled with liquid, it will freeze, causing the coil to rupture, and later repairs are very troublesome. Summary of the invention

[0004] (1) Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the object of the present invention is to provide a dry-wet separation cooling tower, which aims to solve the problems that the heat exchange coils of the existing dry-wet separation cooling towers have poor heat dissipation effect and cannot drain the internal liquid. After freezing, the coils will rupture, making subsequent repairs very troublesome.

[0006] (2) Technical solution

[0007] In order to solve the above technical problems, the present invention provides a dry-wet separation cooling tower, which includes a tower body and a left chamber and a right chamber separated by a partition plate, and heat exchangers are installed inside the left chamber and the right chamber, and the heat exchanger includes an outer frame and a heat exchange tube group installed on the inner side of the outer frame, and the heat exchange tube group is formed by stacking a plurality of bent corrugated tubes that are integrally formed, and an inlet diverter and an outlet manifold are installed on the left side of the outer frame, the inlet diverter is connected to the water inlet ends of the plurality of corrugated tubes, and the outlet manifold is connected to the water outlet ends of the plurality of corrugated tubes.

[0008] Preferably, the outer frame comprises a first support plate and a second support plate, four corners of the first support plate and the second support plate are fixedly connected with a connecting frame, and the first support plate and the second support plate are provided with mounting holes corresponding to the corrugated pipe.

[0009] Furthermore, a third support plate is arranged between the first support plate and the second support plate, and the four corners of the third support plate are fixedly connected to the connecting frame. The third support plate includes a plurality of clamping plates connected in sequence, and a clamping groove corresponding to the corrugated pipe is opened on the front side of the clamping plate, and the plurality of clamping plates are fixedly connected by bolts.

[0010] Furthermore, the bellows is made of a corrosion-resistant stainless steel tube.

[0011] Furthermore, the upper and lower ends of the left side of the first support plate are respectively fixedly connected to two first fixing seats and two second fixing seats, the water inlet manifold is fixedly connected to the two first fixing seats, and the water outlet manifold is fixedly connected to the two second fixing seats.

[0012] Furthermore, the corrugated pipe includes a plurality of straight pipes and a plurality of connecting parts, two adjacent straight pipes are arranged obliquely to form a trapezoidal structure, and both ends of the corrugated pipe are fixedly connected with a water inlet bend pipe part and a water outlet bend pipe part.

[0013] Furthermore, the water inlet elbow is fixedly welded to the lower surface of the water inlet manifold, and the water outlet elbow is fixedly welded to the upper surface of the water outlet manifold.

[0014] Beneficial Effects

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention optimizes the design of the heat dissipation fin structure of the heat exchanger. Since the heat exchange tube group in the heat exchanger is formed by stacking a plurality of bent corrugated tubes that are integrally formed, the heat exchange area can be increased through the corrugated structure, and the heat exchange efficiency can be improved. At the same time, the distribution state of the corrugated tubes in the upper and lower parts of the heat exchanger is changed, so that the straight tubes of two adjacent corrugated tubes are inclined and form a trapezoidal structure. In this way, there is a height difference between the water inlet bend at the upper end and the water outlet bend at the lower end in the entire cooling bellows, thereby ensuring that the liquid in the bellows can flow out naturally under the action of gravity, avoiding the adverse effects caused by the inability to drain the water, and preventing the residual liquid in the bellows from freezing and causing rupture, thereby better adapting to different environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the internal structure of the present invention.

[0018] Figure 2 It is a schematic structural diagram of the heat exchanger of the present invention.

[0019] Figure 3 It is a schematic diagram of the structure of the bellows of the present invention.

[0020] Figure 4 It is a structural schematic diagram of the third support plate of the present invention.

[0021] The markings in the accompanying drawings are: 1, tower body; 2, partition plate; 3, left chamber; 4, right chamber; 5, heat exchanger; 6, outer frame; 7, heat exchange tube group; 8, bellows; 9, water inlet manifold; 10, water outlet manifold; 601, first support plate; 602, second support plate; 603, connecting frame; 604, mounting hole; 605, third support plate; 6051, clamping plate; 6052, clamping groove; 6053, bolt; 606, first fixing seat; 607, second fixing seat; 801, straight pipe; 802, connecting part; 803, water inlet elbow part; 804, water outlet elbow part. DETAILED DESCRIPTION

[0022] This specific implementation is a dry-wet separation cooling tower, and its structural schematic diagram is as follows Figure 1-Figure 4 As shown, the cooling tower includes a tower body 1 and a left chamber 3 and a right chamber 4 divided by a partition plate 2. Heat exchangers 5 are installed inside the left chamber 3 and the right chamber 4. The heat exchanger 5 includes an outer frame 6 and a heat exchange tube group 7 installed on the inner side of the outer frame 6. The heat exchange tube group 7 is formed by stacking a plurality of bent corrugated tubes 8 that are integrally formed. Fins with higher density can also be arranged on the outer side of the corrugated tubes 8, or high-efficiency fins such as corrugated and trapezoidal fins can be used. An inlet manifold 9 and an outlet manifold 10 are installed on the left side of the outer frame 6. The inlet manifold 9 is connected to the water inlet ends of the plurality of corrugated tubes 8, and the outlet manifold 10 is connected to the water outlet ends of the plurality of corrugated tubes 8.

[0023] like Figure 1 and Figure 2 As shown: In this embodiment, the outer frame 6 includes a first support plate 601 and a second support plate 602, and the four corners of the first support plate 601 and the second support plate 602 are fixedly connected with a connecting frame 603, and the first support plate 601 and the second support plate 602 are provided with mounting holes 604 corresponding to the corrugated pipe 8.

[0024] The plurality of corrugated tubes 8 are fixed by the first supporting plate 601 and the second supporting plate 602 , and cooperate with the connecting frame 603 to form a whole.

[0025] like Figure 2 and Figure 4As shown: In this embodiment, a third support plate 605 is arranged between the first support plate 601 and the second support plate 602, and the four corners of the third support plate 605 are fixedly connected to the connecting frame 603. The third support plate 605 includes a plurality of clamping plates 6051 connected in sequence, and a clamping groove 6052 corresponding to the corrugated pipe 8 is opened on the front side of the clamping plate 6051, and the plurality of clamping plates 6051 are fixedly connected by bolts 6053.

[0026] A soft pad can be provided in the slot 6052, and the bellows 8 can be better fixed by a plurality of clamping plates 6051, the slot 6052 and the bolts 6053 to prevent loosening.

[0027] In this embodiment, the bellows 8 is made of a corrosion-resistant stainless steel tube, which can increase the corrosion resistance of the bellows 8 and improve its service life.

[0028] like Figure 2 and Figure 3 As shown: In this embodiment, the upper and lower ends of the left side of the first support plate 601 are respectively fixedly connected to two first fixed seats 606 and two second fixed seats 607, the inlet diverter pipe 9 is fixedly connected to the two first fixed seats 606, and the outlet manifold 10 is fixedly connected to the two second fixed seats 607.

[0029] like Figure 3 As shown: In this embodiment, the bellows 8 includes a plurality of straight tubes 801 and a plurality of connecting portions 802. Two adjacent straight tubes 801 are arranged obliquely to form a trapezoidal structure. The two ends of the bellows 8 are fixedly connected with an inlet bend portion 803 and an outlet bend portion 804.

[0030] In this way, there is a height difference between the water inlet bend 803 at the upper end and the water outlet bend 804 at the lower end in the entire cooling bellows 8, thereby ensuring that the liquid in the bellows 8 can flow out naturally under the action of gravity, avoiding the adverse effects caused by the inability to drain all the water.

[0031] like Figure 2 and Figure 3 As shown: In this embodiment, the water inlet elbow portion 803 is welded and fixed to the lower surface of the water inlet manifold 9, and the water outlet elbow portion 804 is welded and fixed to the upper surface of the water outlet manifold 10.

[0032] This allows for better welding of the water inlet elbow portion 803 and the water outlet elbow portion 804 and is also beneficial for drainage.

[0033] Working principle: By optimizing the design of the heat dissipation fin structure of the heat exchanger 5, since the heat exchange tube group 7 in the heat exchanger 5 is composed of a plurality of integrally formed bent corrugated tubes 8 stacked together, the heat exchange area can be increased through the corrugated structure, and the heat exchange efficiency can be improved. At the same time, the distribution state of the corrugated tubes 8 in the upper and lower parts of the heat exchanger 5 is changed, so that the straight tubes 801 of the two adjacent corrugated tubes 8 are inclined and form a trapezoidal structure, so that there is a height difference between the water inlet bend 803 at the upper end and the water outlet bend 804 at the lower end in the entire cooling bellows 8, thereby ensuring that the liquid in the bellows 8 can flow out naturally under the action of gravity, and preventing the residual liquid in the bellows 8 from freezing and causing rupture.

[0034] All technical features in this embodiment can be freely combined according to actual needs.

[0035] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention may also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A dry-wet separation cooling tower, comprising a tower body (1) and a left chamber (3) and a right chamber (4) separated by a partition plate (2), wherein a heat exchanger (5) is installed inside the left chamber (3) and the right chamber (4), and characterized in that: The heat exchanger (5) comprises an outer frame (6) and a heat exchange tube group (7) installed on the inner side of the outer frame (6); the heat exchange tube group (7) is formed by stacking a plurality of integrally formed bent corrugated tubes (8); a water inlet manifold (9) and a water outlet manifold (10) are installed on the left side of the outer frame (6); the water inlet manifold (9) is connected to the water inlet ends of the plurality of corrugated tubes (8), and the water outlet manifold (10) is connected to the water outlet ends of the plurality of corrugated tubes (8).

2. The dry-wet separation cooling tower according to claim 1, characterized in that: The outer frame (6) comprises a first support plate (601) and a second support plate (602); four corners of the first support plate (601) and the second support plate (602) are fixedly connected to a connecting frame (603); and the first support plate (601) and the second support plate (602) are provided with mounting holes (604) corresponding to the corrugated pipe (8).

3. The dry-wet separation cooling tower according to claim 2, characterized in that: A third support plate (605) is arranged between the first support plate (601) and the second support plate (602); the four corners of the third support plate (605) are fixedly connected to the connecting frame (603); the third support plate (605) comprises a plurality of clamping plates (6051) connected in sequence; a clamping groove (6052) corresponding to the corrugated pipe (8) is provided on the front side of the clamping plate (6051); and the plurality of clamping plates (6051) are fixedly connected by bolts (6053).

4. The dry-wet separation cooling tower according to claim 1, characterized in that: The bellows (8) is made of a corrosion-resistant stainless steel tube.

5. The dry-wet separation cooling tower according to claim 1, characterized in that: The upper and lower ends of the left side of the first support plate (601) are respectively fixedly connected to two first fixed seats (606) and two second fixed seats (607); the water inlet manifold (9) is fixedly connected to the two first fixed seats (606); and the water outlet manifold (10) is fixedly connected to the two second fixed seats (607).

6. The dry-wet separation cooling tower according to claim 5, characterized in that: The corrugated pipe (8) comprises a plurality of straight pipes (801) and a plurality of connecting portions (802), two adjacent straight pipes (801) are arranged obliquely to form a trapezoidal structure, and the two ends of the corrugated pipe (8) are fixedly connected with a water inlet bend pipe portion (803) and a water outlet bend pipe portion (804).

7. The dry-wet separation cooling tower according to claim 6, characterized in that: The water inlet elbow (803) is welded and fixed to the lower surface of the water inlet manifold (9), and the water outlet elbow (804) is welded and fixed to the upper surface of the water outlet manifold (10).

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